APA (7th ed.) Citation

Raad Putrus & Ann Isaac. (2007). The existence and approximation of the periodic solution of a system of nonlinear differential-differential equations of the first order with independent variable delay with boundary conditions. College of Education for Pure Sciences.

Chicago Style (17th ed.) Citation

Raad Putrus and Ann Isaac. The Existence and Approximation of the Periodic Solution of a System of Nonlinear Differential-differential Equations of the First Order with Independent Variable Delay with Boundary Conditions. College of Education for Pure Sciences, 2007.

MLA (9th ed.) Citation

Raad Putrus and Ann Isaac. The Existence and Approximation of the Periodic Solution of a System of Nonlinear Differential-differential Equations of the First Order with Independent Variable Delay with Boundary Conditions. College of Education for Pure Sciences, 2007.